This is a very surprising topic. Why should anything be different?

But it's not about rotation not matching direction of motion around the sun. It's more about how climates on the continents, as they lie, would be affected by jet streams and ocean currents which are driven by earth's rotation. They would encounter the coastlines and mountain ranges from different directions. On the real earth, for example, we see England and Norway oddly warm, equatorial Africa oddly dry, the Amazon uniquely wet. This being about fluid dynamics, every detail is unpredictable, from an armchair perspective. Some alterations seem sensible, but that sense is too frequently illusory.

In a previous post of a map of a retrograde Earth(based on this?) I notice the change of climate in Central America, and I thought it was weird.

In the real Earth there is a lot of wind from the Caribean to the Pacific that caries a lot of humidity and rain.

In a retrograde Earth, the winds in that area go from north to south, and don't have so much humidity. (I expected winds going from the Pacific to the Caribean, without a big change in humidity.) (It is still weird.)

The abstract confused me.

Near the beginning, it refers to "the switch in the character of the European–African climate with that of the Americas, with a drying of the former and a greening of the latter"

Later on, it says "the temperature gradient between Europe and eastern Siberia is reversed, and the Sahara greens, while large parts of the Americas become deserts"

These seem somewhat contradictory, and I'm wondering if something was inadvertently reversed.

Does anyone know if Earth's rotation is influenced by it's electromagnetic polarity and if shifts in rotation are possible during magnetic pole shifts?

Yeah sure fancy plans but how do you implement them? Just grabbing the earth to stop it is hard, and thats just half the acceleration. It turns out the planet is distressingly blobby for such geoengineering projects.

aka "Velikovskian climate change"...

A research paper without pictures. Oh no not again. Research papers are one of the few genres of nonfiction where pictures are allowed.